The present disclosure relates to the field of optical lenses and provides a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens; a second lens having a positive refractive power; a third lens having a positive refractive power; a fourth lens; a fifth lens; and a sixth lens. The camera optical lens satisfies following conditions: 3.00≤f1/f2≤6.00; and −7.00≤(R1+R2)/(R1−R2)≤−1.00. The camera optical lens can achieve a high imaging performance while obtaining a low TTL.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A camera optical lens, comprising, from an object side to an image side: a first lens having a positive refractive power; a second lens having a positive refractive power; a third lens having a positive refractive power; a fourth lens having a negative refractive power and comprising an object side surface being concave in a paraxial region and an image side surface being convex in the paraxial region; a fifth lens having a positive refractive power; and a sixth lens having a negative refractive power, wherein the camera optical lens satisfies following conditions: 3.00≤f1/f2≤6.00; −7.00≤(R1+R2)/(R1−R2)≤−1.00; −1.24≤f4/f≤−0.32; −2.95≤(R7+R8)/(R7−R8)≤−0.78; and 0.03≤d7/TTL≤0.13, where f1 denotes a focal length of the first lens; f2 denotes a focal length of the second lens; R1 denotes a curvature radius of an object side surface of the first lens; R2 denotes a curvature radius of an image side surface of the first lens; f denotes a focal length of the camera optical lens; f4 denotes a focal length of the fourth lens; R7 denotes a curvature radius of the object side surface of the fourth lens; R8 denotes a curvature radius of the image side surface of the fourth lens; d7 denotes an on-axis thickness of the fourth lens; and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
2. The camera optical lens as described in claim 1 , wherein the object side surface of the first lens is convex in a paraxial region, and the image side surface of the first lens is concave in the paraxial region, and the camera optical lens further satisfies following conditions: 1.81≤f1/f≤14.90; and 0.03≤d1/TTL≤0.09, where f denotes a focal length of the camera optical lens; d1 denotes an on-axis thickness of the first lens; and TTL denotes a total optical length from the object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
3. The camera optical lens as described in claim 2 , further satisfying following conditions: 2.90≤f1/f≤11.92; and 0.04≤d1/TTL≤0.07.
4. The camera optical lens as described in claim 1 , wherein the second lens comprises an object side surface being convex in a paraxial region and an image side surface being concave in the paraxial region, and the camera optical lens further satisfies following conditions: 0.60≤f2/f≤2.49; −7.26≤(R3+R4)/(R3−R4)≤−0.94; and 0.04≤d3/TTL≤0.14, where f denotes a focal length of the camera optical lens; R3 denotes a curvature radius of the object side surface of the second lens; R4 denotes a curvature radius of the image side surface of the second lens; d3 denotes an on-axis thickness of the second lens; and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
5. The camera optical lens as described in claim 4 , further satisfying following conditions: 0.96≤f2/f≤1.99; −4.53≤(R3+R4)/(R3−R4)≤−1.17; and 0.07≤d3/TTL≤0.12.
6. The camera optical lens as described in claim 1 , wherein the third lens comprises an object side surface being concave in a paraxial region and an image side surface being convex in the paraxial region, and the camera optical lens further satisfies following conditions: 0.36≤f3/f≤1.44; 0.65≤(R5+R6)/(R5−R6)≤3.33; and 0.04≤d5/TTL≤0.21, where f denotes a focal length of the camera optical lens; f3 denotes a focal length of the third lens; R5 denotes a curvature radius of the object side surface of the third lens; R6 denotes a curvature radius of the image side surface of the third lens; d5 denotes an on-axis thickness of the third lens; and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
7. The camera optical lens as described in claim 6 , further satisfying following conditions: 0.57≤f3/f≤1.15; 1.04≤(R5+R6)/(R5−R6)≤2.67; and 0.07≤d5/TTL≤0.17.
8. The camera optical lens as described in claim 1 , further satisfying the conditions: −0.78≤f4/f≤−0.40; −1.84≤(R7+R8)/(R7−R8)≤−0.98; and 0.05≤d7/TTL≤0.11.
9. The camera optical lens as described in claim 1 , wherein the fifth lens comprises an object side surface being convex in a paraxial region and an image side surface being convex in the paraxial region, and the camera optical lens further satisfies following conditions: 0.37≤f5/f≤1.21; 0.25≤(R9+R10)/(R9−R10)≤1.41; and 0.06≤d9/TTL≤0.22, where f denotes a focal length of the camera optical lens; f5 denotes a focal length of the fifth lens; R9 denotes a curvature radius of the object side surface of the fifth lens; R10 denotes a curvature radius of the image side surface of the fifth lens; d9 denotes an on-axis thickness of the fifth lens; and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
10. The camera optical lens as described in claim 9 , further satisfying following conditions: 0.59≤f5/f≤0.96; 0.40≤(R9+R10)/(R9−R10)≤1.13; and 0.09≤d9/TTL≤0.18.
11. The camera optical lens as described in claim 1 , wherein the sixth lens comprises an image side surface being concave in a paraxial region, and the camera optical lens further satisfies following conditions: −1.65≤f6/f≤−0.49; 0.39≤(R11+R12)/(R11−R12)≤2.70; and 0.02≤d11/TTL≤0.10, where f denotes a focal length of the camera optical lens; f6 denotes a focal length of the sixth lens; R11 denotes a curvature radius of an object side surface of the sixth lens; R12 denotes a curvature radius of the image side surface of the sixth lens; d11 denotes an on-axis thickness of the sixth lens; and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
12. The camera optical lens as described in claim 11 , further satisfying following conditions: −1.03≤f6/f≤−0.61; 0.62≤(R11+R12)/(R11−R12)≤2.16; and 0.04≤d11/TTL≤0.08.
13. The camera optical lens as described in claim 1 , further satisfying a following condition: 0.47≤f12/f≤2.13, where f denotes a focal length of the camera optical lens; and f12 denotes a combined focal length of the first lens and the second lens.
14. The camera optical lens as described in claim 13 , further satisfying a following condition: 0.75≤f12/f≤1.70.
15. The camera optical lens as described in claim 1 , wherein a total optical length TTL from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis is smaller than or equal to 5.21 mm.
16. The camera optical lens as described in claim 15 , wherein the total optical length TTL of the camera optical lens is smaller than or equal to 4.97 mm.
17. The camera optical lens as described in claim 1 , wherein an F number of the camera optical lens is smaller than or equal to 2.47.
18. The camera optical lens as described in claim 17 , wherein the F number of the camera optical lens is smaller than or equal to 2.42.
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November 10, 2019
March 1, 2022
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